Mark this down for later: Tech billionaire Elon Musk says the Boring Company could begin work on the express tunnel linking downtown Chicago and O’Hare International Airport in three to four months, and have it finished in three years. Musk, who’s famous for overly optimistic timelines, laid out that plan today as he stood alongside Chicago Mayor Rahm Emanuel to announce the deal at a news conference in the unfinished Block 37 transit superstation.
